It is where you laugh so damn hard you bring your self to orgasm with out touchingyour self... Where you see some thing funny and sexual at the same time... Or doing some thing during sex like a prank or telling a joke...
Dude pulled out a whoopee cushion while we had sex oh boy I had a laughgasm. The dude had a joy buzzer and shocked me during sex and it made me have a laughgasm.
A phone prank when you get someone to do things on a public netcam somewhere in the world with them not knowing their being watched by 100's of people from around the world LIVE.
That hooker had no idea we could see her on that netcam in New York City. When she got mad about being stood up and threw that fit it was so funny. We all had a good LaughGasim.